From 6f84515d6290230abeea6c13e1c605746a8a272c Mon Sep 17 00:00:00 2001
From: Tom Rondeau <tom@trondeau.com>
Date: Tue, 25 Mar 2014 10:24:35 -0700
Subject: fec: Merging fecapi with support for CC code.
Original code taken from next branch of Nick McCarthy's fecapi:
https://github.com/namccart/fecapi.git
Needs: examples, documentation, other tools.
---
gr-fec/lib/cc_decoder_impl.h | 104 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 104 insertions(+)
create mode 100644 gr-fec/lib/cc_decoder_impl.h
(limited to 'gr-fec/lib/cc_decoder_impl.h')
diff --git a/gr-fec/lib/cc_decoder_impl.h b/gr-fec/lib/cc_decoder_impl.h
new file mode 100644
index 0000000000..cad1df9d38
--- /dev/null
+++ b/gr-fec/lib/cc_decoder_impl.h
@@ -0,0 +1,104 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2013-2014 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_FEC_CC_DECODER_IMPL_H
+#define INCLUDED_FEC_CC_DECODER_IMPL_H
+
+#include <map>
+#include <string>
+#include <gnuradio/fec/cc_decoder.h>
+#include <gnuradio/fec/cc_common.h>
+
+namespace gr {
+ namespace fec {
+ namespace code {
+
+ class FEC_API cc_decoder_impl : public cc_decoder
+ {
+ private:
+ //plug into the generic fec api
+ int get_output_size();
+ int get_input_size();
+ int get_history();
+ float get_shift();
+ int get_input_item_size();
+ const char* get_conversion();
+ //const char* get_output_conversion();
+
+ //everything else...
+ void create_viterbi();
+ int init_viterbi(struct v* vp, int starting_state);
+ int init_viterbi_unbiased(struct v* vp);
+ int update_viterbi_blk(const COMPUTETYPE* syms, int nbits);
+ int chainback_viterbi(unsigned char* data, unsigned int nbits,
+ unsigned int endstate, unsigned int tailsize);
+ int find_endstate();
+ int tester[12];
+
+ COMPUTETYPE *Branchtab;
+ unsigned char Partab[256];
+
+ bool d_tailbiting;
+ bool d_terminated;
+ bool d_truncated;
+ bool d_streaming;
+ int d_ADDSHIFT;
+ int d_SUBSHIFT;
+ conv_kernel d_kernel;
+ unsigned int d_framebits;
+ unsigned int d_k;
+ unsigned int d_rate;
+ unsigned int d_partial_rate;
+ std::vector<int> d_polys;
+ struct v* d_vp;
+ COMPUTETYPE* d_managed_in;
+ int d_numstates;
+ int d_decision_t_size;
+ int *d_start_state;
+ int d_start_state_chaining;
+ int d_start_state_nonchaining;
+ int *d_end_state;
+ int d_end_state_chaining;
+ int d_end_state_nonchaining;
+ unsigned int d_veclen;
+ int parity(int x);
+ int parityb(unsigned char x);
+ void partab_init(void);
+ std::map<std::string, conv_kernel> yp_kernel;
+
+ public:
+ cc_decoder_impl(int framebits, int k,
+ int rate, std::vector<int> polys,
+ int start_state = 0, int end_state = -1,
+ bool tailbiting = false, bool terminated = false,
+ bool truncated = false, bool streaming = false);
+ ~cc_decoder_impl();
+
+ void set_framebits(int framebits);
+ void generic_work(void *inBuffer, void *outbuffer);
+ };
+
+ } /* namespace code */
+ } /* namespace fec */
+} /* namespace gr */
+
+#endif /* INCLUDED_FEC_CC_DECODER_IMPL_H */
--
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